US3770870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turret device for positioning crucibles in ion sources
Assignee: Thales SA
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Filing: 1972-12-22
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Granted: 1973-11-06
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Expires: 1992-12-22
Abstract
Abstract Turret device making it possible to successively introduce, in the ionization chamber of an ion source, crucibles containing different kinds of elements, without any need to interrupt the operation of the source. This device comprises a detachable rotatable barrel associated with cylindrical support-members 8 carrying the crucibles 1, means being provided for rotating the barrel and for translating any one of the crucibles toward the ionization chamber C. This turret device is suitable for an ion source successively producion ions of arsenic, phosphorus, aluminium, silicium, for example.
Inventors
- 👤 J Kervizic
- 👤 R Masic
- 👤 R Warnecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
H; H01; H01J; H01J27/00; H01J27/02; H01J27/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
38 words
A turret device as claimed in claim 1, further comprising a sliding valve located between sAid ionization chamber and said vacuum tight enclosure for isolating said enclosure from said ionization chamber, thereby allowing the opening of said enclosure.
Claim 2
Dependent Claim
52 words
A turret device as claimed in claim 1, wherein said means for heating comprise: an electric furnace located within said ionization chamber and electrically coupled to a heating system including a voltage supply; said heating system being associated to a control circuit for regulating and controlling the temperature of said selected crucible.
Claim 3
Dependent Claim
45 words
A turret device as claimed in claim 3, wherein means for rotating and translating said support-members comprise a motor drive associated to said control circuit, for obtaining the suitable temperature of said selected crucible, this temperature depending from the element contained within said selected crucible.
Claim 4
Dependent Claim
69 words
A turret device as claimed in claim 1, wherein said translating means comprise a circular plate provided internally with an eccentric circular opening having its inner edge surrounding said barrel, said plate being fixed to a ball nut movable along a screwed rod disposed parallel to the rotating axis of said barrel, said plate being equipped with an arm carrying pins for driving said support-members toward said ionization chamber.
Claim 5
Dependent Claim
30 words
A turret device as claimed in claim 1, wherein said means for rotating and translating said support-members within said vacuum tight enclosure include control shafts equipped with vacuum tight joints.
Claim 6
Dependent Claim
45 words
A turret device as claimed in claim 1, wherein means for rotating and translating said support-members comprise a motor drive associated to said control circuit, for obtaining the suitable temperature of said selected crucible, this temperature depending from the element contained within said selected crucible.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |